CME OnDemand: 2022 AOFAS Annual Meeting-3-Dimensional Analysis of First Tarsometatarsal Joint After First Metatarsal Osteotomy with Weightbearing CT (WBCT)

3-Dimensional Analysis of First Tarsometatarsal Joint After First Metatarsal Osteotomy with Weightbearing CT (WBCT)

Video Transcription

Video Summary

This video presentation focuses on the three-dimensional analysis of the first-tarsometatarsal joint after first-tarsometatarsal osteotomy using weight-bearing CT scans. Bunion deformity involves deformities in the axial, coronal, and sagittal planes of the joint. Weight-bearing radiographs have limitations in accurately assessing these deformities. The study evaluated 10 specimens that underwent mid-shaft first-tarsometatarsal osteotomies. Pre- and post-operative weight-bearing CT scans were obtained, and 3D models were created to measure the changes in the alignment of the metatarsal bone relative to the medial cuneiform. The results showed increased dorsiflexion, eversion, and external rotation in the respective planes. Distance mapping analysis also revealed differences in surface interaction. (No credits were mentioned in the transcript)

Asset Subtitle

Jarrett D. Cain, Jordan Stolle, Sorin Siegler

Keywords

three-dimensional analysis

first-tarsometatarsal joint

weight-bearing CT scans

bunion deformity

mid-shaft first-tarsometatarsal osteotomy